Health Benefits of Kombucha Tea Enriched with Olive Leaf and Honey

Nurcan Değirmencioğlu; Elif Yildiz; Metin Guldas; Ozan Gurbuz

doi:10.17756/jocd.2020-031

Analyzing ethanol accumulation in different kombucha tea brands during storage

BCIT Environmental Public Health Journal ◽

10.47339/ephj.2020.11 ◽

2020 ◽

Author(s):

James Chhay ◽

BCIT School of Health Sciences, Environmental Health ◽

Dale Chen ◽

Hsin Kuo

Keyword(s):

Statistical Analysis ◽

Room Temperature ◽

Ethanol Concentration ◽

Health Benefits ◽

Storage Conditions ◽

The Body ◽

Room Temperature Storage ◽

Kombucha Tea ◽

Significant Difference ◽

Temperature Storage

Background Kombucha tea is a fermented tea beverage that is mainly consumed for its associated-health benefits. These associated-health benefits may range from detoxifying the body to cancer treating. However, there is little to no scientific evidence that suggests that they work on humans. Similarly, kombucha tea is also prone to post-fermentation. This presents possible ethanol production and accumulation within the tea after packaging which can pose a possible health risk to susceptible population if not properly labelled or controlled. This study will investigate if there is any post-ethanol accumulation in commercially produced kombucha tea products under various storage conditions. Methods The ethanol concentration of 3 different kombucha tea brands (i.e.: Pure+, Health-Ade, and RISE) at various storage conditions (i.e.: no storage, refrigeration, and room temperature) were analyzed using GC-FID to determine post-ethanol accumulation. In addition, NCSS software was used to conduct a statistical analysis on the data to determine whether the 3 different kombucha tea brands exceeded the ethanol regulatory limit and whether the ethanol accumulation was dependent on storage temperatures. Results The mean ethanol concentration for Pure+, Health-Ade, and RISE after refrigeration for 3 weeks were 0.722%, 0.696%, and 0.050% relatively which all showed a slight decrease in ethanol compared to their baseline ethanol levels (i.e.: no storage). Similarly, Pure+, Health-Ade, and RISE mean ethanol concentration after room temperature storage were 1.766%, 1.285%, and 0.794% relatively which indicates ethanol accumulation. Statistical analysis showed that there is a significant difference between room temperature storage and the other 2 storage conditions (i.e.: no storage and refrigeration). Also, only Pure+ and Health-Ade under room temperature storage showed a statistically significant mean ethanol concentration above the regulatory limit. Conclusion Results suggests that room temperature storage of Pure+, Health-Ade, and RISE for 3 weeks increased the ethanol levels significantly while refrigerating them will decrease the ethanol levels slightly which can minimize any potential post-fermentation process from happening. Furthermore, only Pure+ and Health-Ade under room temperature storage for 3 weeks were over the 1% ABV regulatory limit. Lastly, the data obtained from this study can be used to develop guidelines and policies in regulating kombucha tea manufacturers and in educating the public and other regulatory agencies on the matter.

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Health, Wellness, and Safety Aspects of the Consumption of Kombucha

Journal of Chemistry ◽

10.1155/2015/591869 ◽

2015 ◽

Vol 2015 ◽

pp. 1-11 ◽

Cited By ~ 19

Author(s):

Mindani I. Watawana ◽

Nilakshi Jayawardena ◽

Chaminie B. Gunawardhana ◽

Viduranga Y. Waisundara

Keyword(s):

Functional Food ◽

Health Benefits ◽

Black Tea ◽

Therapeutic Effects ◽

Bioactive Components ◽

Safety Aspects ◽

Kombucha Tea ◽

Varied Diet ◽

Therapeutic Properties ◽

Whole Foods

Functional foods have been identified as whole foods and fortified, enriched, or enhanced products which have a potentially beneficial effect on health when consumed as part of a varied diet on a regular basis, at effective levels. As consumer awareness on functional food escalates, the interest towards conducting scientific studies in this field has also proportionately increased. Many of the traditional food products are known to possess bioactive components, thus qualifying as functional food. Kombucha tea is produced by fermenting sugared black tea with a mixed culture of yeast and bacteria. Kombucha tea has gained immense popularity in recent times due to many associated health benefits. The therapeutic effects of this beverage are thought to be derived from the chemical composition of this beverage, mainly the polyphenols and secondary metabolites which are produced during fermentation. However, the safety aspects of the beverage also need to be taken into account when qualifying the beverage as a functional food. Nevertheless, Kombucha tea could be easily recognized as a beverage which is able to replace the consumption of carbonated beverages due to its possession of health benefits and therapeutic properties.

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STUDI KRITIS MINUMAN TEH KOMBUCHA: MANFAAT BAGI KESEHATAN, KADAR ALKOHOL DAN SERTIFIKASI HALAL

International Journal Mathla’ul Anwar of Halal Issues ◽

10.30653/ijma.202111.7 ◽

2021 ◽

Vol 1 (1) ◽

pp. 9-18

Author(s):

Priyono Priyono ◽

Dody Riswanto

Keyword(s):

Human Body ◽

Biological Activities ◽

Health Benefits ◽

Literature Study ◽

Alcohol Content ◽

Global Issue ◽

Kombucha Tea ◽

Anti Inflammatory ◽

Method Approach

Kombucha tea has become a trendy drink and is in demand by consumers because it has many health benefits. However, the fermentation of kombucha also produces ethanol or alcohol. Halal status has become a global issue. No exception for kombucha tea products. The purpose of this study was to examine the health benefits, alcohol content and halal certification of kombucha tea. The method approach used is the literature study method. The results of the study indicate that kombucha tea is a fermented drink that has an effect on the health of the human body by having biological activities such as antioxidants, antimicrobials, antidiabetic, anticancer, hepaprotective and anti-inflammatory properties. The alcohol content in kombucha tea can be consistently below 0.5% if the kombucha manufacture meets certain standard and standard processes. Kombucha tea in Indonesia has products that have received halal certification.

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